Road-grading machine.



J. M. BRESEE.

ROAD GRADING MACHINE,

APPLICATlON FILED JUNE 26.1916.

Patented May 8, 1917.

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J. M. BRESEE.

ROAD GRADING MACHINE.

APP L|CATION rut-:0 JUNE 26.1916.

Patented May 8, 1917.

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JAMES M. BRESEE, 0F MATTOON, ILLINOIS.

Specification of Letters Patent.

ROAD-GRADING- MACHINE.

Patented May 8, 1917.

Application filed June 26, 1916. Serial No. 106,037.

To all whom it may concern p Be it known that 1, James M. Bunsen, a citizen of the United States, residing at Mattoon, in the county of (oles and State of Illinois, have invented certain new and useful Improvements in RoadGrading Machines, of which I do declare the following to be a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My present invention has relation more particularly to that class of road grading machines in which provision is made for smoothing down the central. portion of the road after the scraper bars of the grading machine have drawn the dirt from the mar gin toward the center of the road. Preferably, my invention is embodied in the form of an attachment adapted to be detachably connected to the rear of the main frame of the machine that carries the scraper bars by means of which the dirt is drawn up from the sides toward the center of the road, but obviously features of my invention may be embodied as inseparable parts of a machine whereby the entire work of grading the road is effected. The invention consists in the novel features hereinafter described, illustrated in the accompanying drawings and particularly pointed out in the claims at the end of this specification.

Figure 1 is a plan view of an attachment for a road grading machine embodying my invention. Fig. 2 is a view in side elevation showing the manner of connecting my attachment to the rear of a road grading machine. Fig. 3 is a view in longitudinal vertical section taken centrally through the rollers and their main or supporting frame, parts of the rollers being shown in elevation. Fig. 4 is a view in vertical section on line 1-4 of Fig. 1. Fig. 5 is a detail view in horizontal section on line 5-5 of Fig. 4.

The main frame of the road grader attachment is preferably formed of metal angle bars suitably bolted together. The front and rear bars 6 and 7 are connected together by the end bars 8, and from these end bars rise the standards 9, preferably formed of bent angle bars, upon the top of which standards is secured a broad longitudinal channel bar 10 that extends from end to end of the main frame.

To the under side of the channel bar 10 are secured the draft bars 12 that extend forwardly and converge, as clearly shown in Fig. 1, the forward ends of these bars 12 being connected by a plate 13 riveted thereto. The extreme forward ends of the bars 12 are bent, asat 14, into parallel alinement to form a clevis and through this clevis are formed holes to receive a through bolt or clevis bolt 15 whereby the attachment may be detachably connected to a projecting portion 16 of the rear end of the main frame of a road grading machine. In Fig. 2 of the drawings, I have shown the rear end of one of the scraper bars 17 of a road grader 0f the type set forth in Letters Patent No. 1,128,654, granted to me February 16, 1915, and in application Serial No. 77,117, filed by me February 9, 1916, this bar 17 being one of a pair of such bars adapted to scrape the dirt from. the sides toward the center of the road, the bars 17 converging or approximating each other at a point below the clevis of the draft bars 12.

Adjacent the center of the main frame of my attachment are mounted the arch bars 20, spaced slightly apart and the lower ends of which are secured to the longitudinal bars 6 and 7 of the main frame and to the longitudinal channel bar 10, as clearly shown in Figs. 1, 2' and 1 of the drawings. Between these arch bars 20 is mounted a vertically movable ournal bar 22 the front end of which is pivoted, as at 23, to the arch bars 20, while its rear end extends between and rearwardly of the back members of the arch bars 20, as clearly seen in Figs. 2 and l of the drawings. As shown, the journal bar 22 is formed of two bars riveted together (see Figslt and 5,) the central portions of these bars being provided with outwardly projecting flanges or members 2 1 that form supports for the journals of the inner ends of the rollers 27. To each of the flanges or members 24: is riveted a pair of angle plates or brackets 28 that are formed with holes to receive the trunnions 30 of the journal blocks 31 wherein are mounted the inner ends of the shafts 32 of the rollers 27. The outer end of each of the shafts 82 is mounted in a journal block 33 that has trunnions 3 1 that pass through holes formed in the upstanding members of angle plates or brackets 35 secured to the end bars 8 of the main frame. The rear end of the journal bar 22 that supports the inner ends of the shafts 32 has pivotally connected thereto the yoke-shaped lower end 40 of a rod ,41 that passes through .a bracket 42 that bolted to t e ear m s Q the ar hbars 20 and.

upon the rod 41 is mounted a coil compression spring 4 1 that tends to force downward the journal bar 22. From the construction of parts as thus far defined it will be seen that the inner ends of the rollers 27 are free to rise and fall as the rollers pass over the ridge of dirt that has been thrown toward the center of the road by the scraper bars 17 of the grading machine, the journal blocks 31 and 33 at the opposite ends of the shafts 32 of the rollers 27 turning slightly to respond to the up and down movements of the rollers 27. The spring 44, tending as it does to resist the upward movements of the inner ends of the rollers 27, insures a pressure of the rollers upon the earth along the middle of the roadway, while allowing the rise and fall of the rollers at their inner ends. If desired, weights may be placed upon the top of the channel bar 10 to increase the pressure of the rollers 27.

In front of the rollers 27 is arranged what may be termed a preliminary leveler bar 50 that is shown as furnished with depending teeth 51, this leveler bar 50 being preferably a channel bar the lower member of which is provided with holes to receive the threaded upper ends of the teeth 51, and upon these threaded upper ends of the teeth 51 are mounted nuts 52 and 53 whereby the teeth can be securely held in position and adjusted if desired. The channel bar 50 is pivotally supported, preferably by I-bolts 54, that are connected to the upper member of the channel bar. To these bolts 54 are attached hooks 55 that are secured to the lower ends of the vertical bars 56. These vertical bars 56 are connected to the draft bars 12 by bolts 57 and as shown, from each of the draft bars 12 depends a bracket 58 to which the adjacent bar 56 is attached by means of a bolt 59. v Preferably, each of the bars 56 is provided with a series of holes 60 for the bolts 57 and 59 so that the height of the channel bar 50 may be adjusted as desired. The channel bar 50 and its teeth 51 serve to break up the clods of dirt, etc., that may have been forced to the center of the road and to preliminarily level the ridge inadvance of the rollers 27. To the center of the channel bar 50 is secured a vertical bar 62, preferably of T-bar construction, that extends upwardly and has connected adjacent its upper end one end of a coil spring 63, the opposite end of this spring being connected to a bolt 64 extending between the arch bars 20 at their front. The spring 63 serves to normally hold the channel bar 50 in approximately vertical position but permits this channel bar to yield against the force of the spring as the channel bar and the teeth pass over the clods of earth, etc.

It is obvious that the details of construction above set forth may be modified without departing from the spirit of the invenframe, a bar extending across and secured to the tops of said. arch bars, draft bars secured to and extending forwardly from said last mentioned bar, rollers mounted within said main frame, journal blocks for the outer ends of said rollers mounted upon the end bars of the main frame, and a vertically movable journal support extending transversely of the main frame and provided with pivoted journal blocks wherein the innerends of said rollers are supported.

2. An apparatus of the character described comprising a rigid, rectangular main frame, upstanding brackets at the outer ends of said main frame, ournal boxes arranged between and pivoted to said brackets to turn in vertical direction, a centrally disposed, vertically movable journal support, journal blocks pivotally mounted upon said support and spring mechanism for normally forcing said journal support downward.

8. An apparatus of the character described comprising a main frame, rollers mounted in said main frame, pivoted journal blocks for the inner and outer ends of said rollers, a vertically movable bar extending transversely of the main frame, and whereon the journal blocks for the inner ends of the rollers are pivotally mounted and spring mechanism for forcing said bar normally downward.

4. An apparatus of the character described comprising a rectangular main frame, upstanding brackets at the outer ends of said main frame, journal boxes arranged between and pivoted to said brackets to swing in vertical direction, a single centrally disposed, vertically movable journal support pivoted at one end to said main frame, journal blocks pivotally mounted upon said sup port, a rod extending upwardly from the free end of said support and a spring mounted upon said rod for forcing said support normally forward. I

5. An apparatus of the character described comprising a main frame, rollers mounted in said main frame, pivoted journal blocks for the inner and outer ends of said rollers, a bar extending transversely of the main frame and whereon the journal blocks for the inner ends of the rollers are pivotally mounted, said journal bar being pivoted at one end, and a spring engaging the free end of said journal bar for forcing it normally downward.

6. An apparatus of the character described comprising a roller carrying frame, a leveler bar arranged at the front of the roller carrying frame and pivoted to swing from front to rear, a bar projecting upwardly from said leveler bar and having its lower end rigidly secured thereto and a spring extending between the upper end of said projecting bar and the main frame for acting in opposition to the rearward movement of said leveler bar.

7. An apparatus of the character described comprising a roller carrying frame, draft bars extending forwardly from said frame, a leveler bar arranged at the front of the roller carrying frame and bars pivoted to swing from front to rear, vertically adjustable bars connecting said leveler bar and said draft bars, a bar projecting upwardly from said leveler bar and a spring extending between the'upper end of said projecting bar and the main framefor acting in opposition to the rearward swinging movement of said leveler bar.

JAMES M. BRESEE.

Copies of this patent may be obtained for five cents each, by addressing the Coinmisaioner of Patents,

Washington, D. C. 

